Home / 5,191.80-7,787.44-2,071.68

Finding the Fourth Proportional to 5,191.80, 7,787.44 and 2,071.68

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Solution

The fourth proportional to 5,191.80, 7,787.44 and 2,071.68 is: 3,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.80 : 7,787.44 = 2,071.68 : x
  2. Step 2: Convert to fraction form
    5,191.80/7,787.44 = 2,071.68/x
  3. Step 3: Cross multiply
    5,191.80x = 7,787.44 × 2,071.68
  4. Step 4: Simplify right side
    5,191.80x = 16,133,083.70
  5. Step 5: Solve for x
    x = 16,133,083.70/5,191.80
  6. Step 6: Final answer
    x = 3,107.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.